A representative character is one who stands for D, 'humanity in general'. Because it doesn't stand for only a certain type of personality, an ethnic or a political group, but rather for the whole humankind.
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The correct option is statement 3.
The statement shows that Nora desired to please her husband by doing the things her husband want, in this case she desire to keep her home beautiful just the way her husband like it. This implies that she respects what her husband likes and devote herself to pleasing him.
A : by using I throughout it makes it feel as if you are experiencing the situation yourself